© 2006
GE ECM
by Regal-Beloit
- 88 -
Indoor Blower Motors
v0.2
-
If
high voltage is present at the motor, and the low (control) voltage is present
on a programmed tap, and the motor is operating
-
Then
any airflow issues such as high or low temperature rise, tripping main
limit, freezing coils or compressor overload tripping should be addressed as an
airflow issue first. For more information on airflow restrictions see pages 43-49 in
this manual. Remember the X13 is not a constant CFM motor. Airflow will
decrease if static pressure gets to high in the system.
o
Using the manufacturers installation instructions confirm that the low
(control) voltage is applied to the proper tap per the thermostat demand.
o
Correct all obvious airflow restrictions such as closed or blocked registers,
grilles or dampers or dirty filter, blower wheel, secondary heat exchanger
and evaporator coil.
o
Check the external static pressure (ESP) and correct airflow restrictions if
the ESP is above 0.8 inches water column. These issues could be dirty,
blocked, crushed or dented ductwork or simply undersized ductwork.
o
Check filter sizing and follow manufacturer’s recommendations for proper
filter applications.
-
If
high voltage is present at the motor, and low (control) voltage is present on a
programmed tap, and the motor is not operating
-
Then
the motor must be replaced. A direct replacement motor from the
manufacturer for the same model and size unit is required.